Want to be a web developer? You'll need to know HTML. Prepare for HTML5 certification by enrolling in July's Course of the Month! It's free for Premium Members, Team Accounts, and Qualified Experts.
Course Of The Month
Become a Premium Member and unlock a new, free course in leading technologies each month.
Solved
(String) request.getSession().getAt
Posted on 2004-10-08
Hi!
From the following code, what does it mean if forward is null?
Why does this func passes string “forward”
request.getSession().getAt
+++++++++++++++++++++++++
public ActionForward create(ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response)
throws Exception {
…
…
String forward = (String) request.getSession().getAt
…
…
if (forward==null)
return (mapping.findForward(Const
else
return (mapping.findForward(forwa
+++++++++++
thanks,
From the following code, what does it mean if forward is null?
Why does this func passes string “forward”
request.getSession().getAt
+++++++++++++++++++++++++
public ActionForward create(ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response)
throws Exception {
…
…
String forward = (String) request.getSession().getAt
…
…
if (forward==null)
return (mapping.findForward(Const
else
return (mapping.findForward(forwa
+++++++++++
thanks,
[X]
Welcome to Experts Exchange
Add your voice to the tech community where 5M+ people just like you are talking about what matters.
- Help others & share knowledge
- Earn cash & points
- Learn & ask questions
3 Comments
if the string forward is null it mean the set of forward was unsuccessful with this (String) request.getSession().getAt
they check to ensure the request.getSession returned value, forward appears to be an attribute which is set elsewhere in the code, from the snippet I cannot really tell, though perhaps likely this is from some file where attributes are listed, a bean, an xml file, a properties file, one of those. forward is a session attribute though so whereever you have those defined you will likely find forward there.
they check to ensure the request.getSession returned value, forward appears to be an attribute which is set elsewhere in the code, from the snippet I cannot really tell, though perhaps likely this is from some file where attributes are listed, a bean, an xml file, a properties file, one of those. forward is a session attribute though so whereever you have those defined you will likely find forward there.
Active 7 days ago
The 'forward' attribute might be set on the request instead of the session. Try this:
String forward = (String) request.getAttribute("forw
if the previous JSP page sets the variable you must specify the scope. The scope can be three possible values:
-Page - The variable can ONLY be accessed in the current JSP page (This is the default)
-Request - The variable can be accessed in the current page, included pages and forwarded actions
-Session - The variable can be accessed by ALL future pages by the same user
String forward = (String) request.getAttribute("forw
if the previous JSP page sets the variable you must specify the scope. The scope can be three possible values:
-Page - The variable can ONLY be accessed in the current JSP page (This is the default)
-Request - The variable can be accessed in the current page, included pages and forwarded actions
-Session - The variable can be accessed by ALL future pages by the same user
Hi,
Well, 'forward' attribute is obtained from the session. So previously, there must be someone who already locate some value on that session and now you grab it (either from servlet, Struts class or etc). If the session is having no value, then it means null (nobody has ever locate some value on it or it has been set to empty).
So if the Java program know the 'forward' attribute is null, it will send your program into return (mapping.findForward(Const
That particular codes is Struts ActionForward which means that Constants.RETURN_TO_VIEW must contain some value to determine (probably in struts-config.xml) where to go if the session is null. Otherwise, mapping.findForward(forwar
So it works like a statement to determine to where your application should go.
I hope that helps.
Well, 'forward' attribute is obtained from the session. So previously, there must be someone who already locate some value on that session and now you grab it (either from servlet, Struts class or etc). If the session is having no value, then it means null (nobody has ever locate some value on it or it has been set to empty).
So if the Java program know the 'forward' attribute is null, it will send your program into return (mapping.findForward(Const
That particular codes is Struts ActionForward which means that Constants.RETURN_TO_VIEW must contain some value to determine (probably in struts-config.xml) where to go if the session is null. Otherwise, mapping.findForward(forwar
So it works like a statement to determine to where your application should go.
I hope that helps.
Featured Post
Question has a verified solution.
If you are experiencing a similar issue, please ask a related question
Let's recap what we learned from yesterday's Skyport Systems webinar.
- Ransomware
- Experts Exchange
- Skyport Systems
- Active Directory
- Security
- *privileged credentials
Part Two of the two-part Q&A series with MalwareTech.
There are cases when e.g. an IT administrator wants to have full access and view into selected mailboxes on Exchange server, directly from his own email account in Outlook or Outlook Web Access. This proves useful when for example administrator want…
There's a multitude of different network monitoring solutions out there, and you're probably wondering what makes NetCrunch so special.
It's completely agentless, but does let you create an agent, if you desire.
It offers powerful scalability …
Suggested Courses
Earn Certification
HTML5 Specialist - Certification
Free withPremium
Course of the Month5 days, 16 hours left to enroll
627 members asked questions and received personalized solutions in the past 7 days.
Join the community of 500,000 technology professionals and ask your questions.